Datasheet LTM8074 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | 40VIN, 1.2A Silent Switcher µModule Regulator |
| 页数 / 页 | 24 / 1 — FEATURES. DESCRIPTION. Low Noise Silent Switcher. Architecture. CISPR 22 … |
| 修订版 | A |
| 文件格式/大小 | PDF / 1.8 Mb |
| 文件语言 | 英语 |
FEATURES. DESCRIPTION. Low Noise Silent Switcher. Architecture. CISPR 22 Class B Compliance
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LTM8074 40VIN, 1.2A Silent Switcher µModule Regulator
FEATURES DESCRIPTION
n
Low Noise Silent Switcher
®
Architecture
The LTM®8074 is a 40VIN, 1.2A continuous, 1.75A peak, n
CISPR 22 Class B Compliance
step-down µModule® (power module) regulator. The Silent n
Wide Input Voltage Range: 3.2V to 40V
Switcher architecture minimizes EMI while delivering n
Wide Output Voltage Range: 0.8V to 12V
high efficiency at frequencies up to 2.2MHz. Included in n
1.2A Continuous Output Current at 24VIN, 5VOUT,
the package are the switching controller, power switches,
TA = 85°C
inductor, and all support components. Operating over an n
1.75A Peak Output Current at 3.3VOUT
input voltage range of 3.2V to 40V, the LTM8074 supports n Selectable Switching Frequency: 200kHz to 2.2MHz an output voltage range of 0.8V to 12V and a switching n External Synchronization frequency range of 200kHz to 2.2MHz, each set by a single n Configurable as an Inverter resistor. Only the input and output filter capacitors are n 4mm × 4mm × 1.82mm BGA Package needed to finish the design. The low profile package enables utilization of unused space
APPLICATIONS
on the bottom of PC boards for high density point of load regulation. The LTM8074 is packaged in a thermally en- n Automotive Battery Regulation hanced, compact over-molded ball grid array (BGA) package n Power for Portable Products suitable for automated assembly by standard surface mount n Distributed Supply Regulation equipment. The LTM8074 is RoHS compliant. n Industrial Supplies All registered trademarks and trademarks are the property of their respective owners. n Wall Transformer Regulation
TYPICAL APPLICATION 3.3VOUT from 4.5VIN to 40VIN Step-Down Converter CISPR22 Class B Emissions DC2753A Demo Board VOUT = 3.3V, 1.2A Load
V V IN IN LTM8074
No EMI Filter (FB1, L1 Shorted)
4.5V TO 40V RUN 55 1µF V 3 METER PEAK LIMITS OUT VOUT 45 3.3V RT 10µF 23.7k 76.8k /m) 35 1.5MHz GND SYNC FB 8074 TA01a 25 15 PINS NOT USED IN THIS CIRCUIT: TR/SS, PG AMPLITUDE (dBuV 5 MAX PEAK EMISSIONS CSPR22 CLASS B LIMITS –5 0 200 400 600 800 1000 FREQUENCY (MHz) 8074 TA01b Rev. A Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Photo Package Description Typical Application Related Parts
FEATURES DESCRIPTION
n
Low Noise Silent Switcher
®
Architecture
The LTM®8074 is a 40VIN, 1.2A continuous, 1.75A peak, n
CISPR 22 Class B Compliance
step-down µModule® (power module) regulator. The Silent n
Wide Input Voltage Range: 3.2V to 40V
Switcher architecture minimizes EMI while delivering n
Wide Output Voltage Range: 0.8V to 12V
high efficiency at frequencies up to 2.2MHz. Included in n
1.2A Continuous Output Current at 24VIN, 5VOUT,
the package are the switching controller, power switches,
TA = 85°C
inductor, and all support components. Operating over an n
1.75A Peak Output Current at 3.3VOUT
input voltage range of 3.2V to 40V, the LTM8074 supports n Selectable Switching Frequency: 200kHz to 2.2MHz an output voltage range of 0.8V to 12V and a switching n External Synchronization frequency range of 200kHz to 2.2MHz, each set by a single n Configurable as an Inverter resistor. Only the input and output filter capacitors are n 4mm × 4mm × 1.82mm BGA Package needed to finish the design. The low profile package enables utilization of unused space
APPLICATIONS
on the bottom of PC boards for high density point of load regulation. The LTM8074 is packaged in a thermally en- n Automotive Battery Regulation hanced, compact over-molded ball grid array (BGA) package n Power for Portable Products suitable for automated assembly by standard surface mount n Distributed Supply Regulation equipment. The LTM8074 is RoHS compliant. n Industrial Supplies All registered trademarks and trademarks are the property of their respective owners. n Wall Transformer Regulation
TYPICAL APPLICATION 3.3VOUT from 4.5VIN to 40VIN Step-Down Converter CISPR22 Class B Emissions DC2753A Demo Board VOUT = 3.3V, 1.2A Load
V V IN IN LTM8074
No EMI Filter (FB1, L1 Shorted)
4.5V TO 40V RUN 55 1µF V 3 METER PEAK LIMITS OUT VOUT 45 3.3V RT 10µF 23.7k 76.8k /m) 35 1.5MHz GND SYNC FB 8074 TA01a 25 15 PINS NOT USED IN THIS CIRCUIT: TR/SS, PG AMPLITUDE (dBuV 5 MAX PEAK EMISSIONS CSPR22 CLASS B LIMITS –5 0 200 400 600 800 1000 FREQUENCY (MHz) 8074 TA01b Rev. A Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Photo Package Description Typical Application Related Parts